NBN EN 60999-1 : 2000

1. Scope
2. Normative references
3. Definitions
4. General
5. General notes on tests
6. Main characteristics
7. Connection of conductors
8. Constructional requirements
9. Tests
Annex A (informative) Approximate relationship between mm2 and
        AWG sizes
Annex B (normative) Rated connecting capacity and corresponding
        guages
Annex C (normative) Construction of standed conductors
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography
Figure 1 - Test apparatus according to 9.4
Figure 2 - Examples of pillar clamping units
Figure 3 - Examples of screw and stud clamping units
Figure 4 - Examples of saddle clamping units
Figure 5 - Examples of mantle clamping units
Figure 6 - Examples of screwless-type clamping units
Table 1 - Relationship between rated connecting capacity and
          diameter of conductors
Table 2 - Relationship between mass and cross-sectional area
          during testing
Table 3 - Relationship between pull force and cross-sectional
          area
Table 4 - Relationship between torque and nominal diameter of
          thread

Applies to screwless and screw-type clamping units for connecting devices, either as integral parts of equipment or separate entities, for the connection of electrical copper conductors (complying with IEC 60228), rigid (solid or standard) and/or flexible, having a cross-sectional area of 2 mm2 up to and including 35 mm2 and equivalent AWG sizes with a rated voltage not exceeding 1000 V a.c. (frequency up to and including 1000 Hz) or 1500 V d.c. Primarily suitable for connecting unprepared conductors. Does not apply to clamping units: for connection by crimping or soldering, data and signalling circuits, flat quick-connect terminations, insulation-piercing connecting devices and twist-on connecting devices which are covered by IEC 61210[3]1) IEC 60998-2-3 [1] & IEC 60998-2-4 [2] respectively.